Chemical Bonds Review

Atoms in molecules share pairs of electrons when they form

• covalent bonds.

• ionic bonds.

• hydrogen bonds.

• polymers.

Tags

NGSS.MS-PS1-1

The electrons that are lost, gained, or shared in chemical bonds are called ________________.

• valence electrons

• chemical electrons

• Lewis electrons

• none of the above

Tags

NGSS.HS-PS1-2

How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?

• 2

• 4

• 6

• 8

Which of the following is a similarity between ionic and covalent bonds?

• Both include the gaining and losing of electrons

• Both include the sharing of electrons

• Both make the elements more stable

• Both are typically found as solids at room temperature

______________ compounds are usually the strongest.

• Ionic

• Covalent

• Molecule

• solid

Tags

NGSS.HS-PS1-3

Why don't noble gases form bonds?

• Noble gases do form bonds

• They all have a full octet

• They only bond with each other

Atoms gain lose, gain, or ______electrons to get a stable outer energy level.

• share

• split

• create

• destroy

Tags

NGSS.MS-PS1-1

When a molecule has an opposite electrical charge on each end, it is known as what?

• cohesion

• polar molecule

• hydrogen bond

• solution

What is the number of valence electrons of Neon?

• 6

• 7

• 8

• 9

Which statement explains why water molecules stick together?

• both sides are negative

• one side has a positive charge and the other side has a negative charge

• one side has a negative charge adn the other side has a neutral charge

• both sides are positive